<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
  </head>
  <body>
    <script>
      let fakeArr = {
        length: 2,
        0: 'hello',
        1: 'word'
      }
      //方法1
      console.log(Array.from(fakeArr))
      //方法2
      console.log(Array.prototype.slice.call(fakeArr))
    </script>
  </body>
</html>
